Simex PL 4520, Use And Maintenance Manual

Page: 10 / 60

10
6. Technical characteristic
6.1 Machine description
The Self-levelling Planer, hereinafter referred to as the ‘machine’, is a cold planer for working on flat surfaces
made of asphalt or concrete. It can be fitted onto the majority of skid steer loaders, and is ideal for lengthwise
trench cutting on horizontal ground.
The self-levelling feature of the side support side plates ensures the side plates are kept parallel to the
ground, guaranteeing the utmost stability and perfect spoil containment. It also maintains the set planing
depth in all conditions. The depth can be uniform or set differently for each side (RH/LF) using adjustment
screws (standard version) or hydraulic cylinders (optional accessories).
The planer must be positioned so that the sides grip the ground. For increased safety, it is advisable to lift the
rear wheels of the skid steer loader a few centimetres off the ground.
To facilitate planing on a surface which is not parallel to the surface on which the primer mover wheels are
resting, the planer can be tilted transversally either automatically (on the standard machine) or using a
hydraulic cylinder (optional).
If planing is required up to and beyond the external edge of the prime mover, a side shift, operated by a
hydraulic cylinder, allows the operator to shift the machine from the central position to the right-hand side.
There is also an optional water misting system available, which features a tank that can be mounted on either
the side shift or the prime mover's roof and is used for dust abatement during planing.
Operating principle:
The planing action is obtained by combining the rotary motion of the cutter drum (driven by the hydraulic
motor onto which it is fitted directly) and - at the same time - the side shift motion of the prime mover on which
the machine is installed.
The hydraulic motor drives the cutter drum directly, which rotates in the direction indicated by the arrow in the
figure, cutting away and crushing up the material in question (asphalt, concrete and suchlike). The material is
removed by hard metal teeth positioned on the said drum.
The hydraulic power is transmitted by the prime mover to the machine via hoses.
A = Maintenance of grip on ground
B = Cutter drum rotation direction
C = Direction of work